Rotating mechanism for rock-drills.



G. J. SMITH. ROTATING MBGHANISM POR ROCK DRILLS.

APPLICATION FILED JULY 22,1912.

1,061 ,788. Pal/sented May 13, 1913. ,.97 35 3736739 5' i 1.9

3 A f2.9 n 25 f7 7 C917 Einlf Z6 13 l Y 10 CP ,.0 ffy@ ,31 5 5; ,f j 3,5! l m 71d Zz? Jr-A Q f I l 5 a g CLARK J. SMITH, OF OITUMWA, IOWA, ASSIGNOR T0 THE Hannsoco wonnen DRILL COMPANY, OF OTTU'MWA, IOWA.

no'rATING Meenemen For. ROCK-nains.

Original application filed 'February 26, 1912, Serial No. 679,956.

Specification. of Letters IPatent.

Patented MayT 13, 1913.

A 22, 1912. Serial No. 710,773.

To all whom t may concern Be it known that I, CLARK J. SMITH, residing at Ottumwa, in the county of lVapello and State of Iowa, have invented certain new and useful Improvements in Rotating Mechanism for RockDrills, of which the following is a specification.

My invention relates to certain new and useful improvements in rock drills of the reciprocating hammer type,land the present invention particularly has for its object to provide a' drilling engine with an improved drill chuck through the medium of which the drill ,tool .may be turned on its longitudinal axis, and a scavenging fluid may be forced through the chuck and drill to blow out or washout thel dirt from the cuttings of the hole being bored.

Generally, the invention comprises a drilling engine having a front supporting member or body in which the chuck is rotatably mounted, the chuck having a stem to co operate with the hammer of Vthe engine proper, and means are provided for' eiect-ing a turning moving of the chuck, preferably coperative with the action of the hammer.

More subordinately, the invention resides i' in those novel details of construction, como section on the line 3-3 of Fig. 2.

Fig. 5,- is' Fig. 6, is a detail view of a partv bination and. arrangement of parts, all of which will be fully described, and then be specifically pointed out in the appended claims, reference being had to theV accompanying drawings, in whichz Figure 1,' is a central vertical longitudinal section Vof the machine embodying the invention. Fig.- 2, is an enlarged d/etail section of the support and ch'uc showing the manner of mounting the chuck in the support, and the manner of delivering the scavenging agent to the tool. Fig. 3, is a cross Fig. 4, is a cross section on the linee- 4 of Fig. 1. a cross section on the line5-5 of Fig. 1.

of: ithe' chuckrotating mechanism. Fig. 7,

`is a cross section on the line 7-7 of Fig:` 6.

Referring now to thef accompanymg drawings, vin which'like numerals and letters of reference indicate like parts in all the ligues, 1 is VtheA main supporting body, which has a 'member 2, through the' medium of whichthe machine may be mounted on a suitable column, tripod or 'other device, tor

sustaining the same `in position for work, the sustaining device notJ being shown in the drawing. The support 1 holds the telescoping feeding mechanism 3,-41, which may be of any approved type, and on the front of the movable feeding piston rod 4, the chuck holding support or casting 5, is mounted.

8 designates the drilling engine proper, which has a projection 7, at its front, to which the spacing rods 6 are secured, the rods 6 being secured to the front chuck holding support 5, as indicated best in Fig. 1 of the drawings.l The drilling 4engine proper 8 has the valve controlling valve 9 is located, the valve 9 beingk of the slide type, and automatically' operated by the rocker 10, that projects into a groove 47, in the hammer piston 11, thereby holding the hammer piston from. turning on its longitudinal axis.

The construction of the engine proper per se may be of anyapprov'ed type and a. de tail description thereof is thought to be unnecessary.

The hammer piston 11 in my invention is bored at 12 to receive thestub shaft 16 that has a spiral keyway 17 to receive the key 15 on the plug sleeve 14, that is secured to the hammer piston 11 whereby when the hammer piston 11 reciprocates, a rocking motion will be imparted to the stub shaft;l

The/stub shaft 16 carries a ratchet 18, uwhich, through `the medium of pawls 20, imparts a unl-directional rotation to the Divided and thisl application led July chest in whichthe l gear 19, `which meshes with the pinion 22 on the turning shaft 23, hereinafter again ref `ferred to. The pawls 20 are held in contact with the ratchet 18 by light springsl 21.4

The rotatable shaft 28 at the end opposite the pinion v22 carries another pinion Q4 that meshes with a gear25 on the squared end 26 ofthe chuck 28, so that the Chilches may be turned on its longitudinal axis as'the pier' *.-ton 11 moves backwardly, but will not be turned during the forward movement of the piston 1 1. The piston 11 includes the ram 13 which is adapted to impact the shank' 26, ofthe chuck 28,v to drive'the drill into the out.y The supporting member 5 has a chuck chamber 27,- in which the chuck 28 is rotatablyV mounted, the chamber' 27' Merging with a reduced portion 38 to receive the reves e conveyed to the cutting end (not hewn) of f' same will impact the shank 26, and orcethe duced portion 39, of the chuck. 28,;1nd there= by e shoulder to prevent In@moment` the chuck beyond e predetermined nosh` tion in the direttion ofV` the proper, The chuck has e wide oiroumferential groove 29 neer its front end to cooper-nte with thekey 3Q, Wl'lereby the chuck will he held from coming out of' the support e, and hy roesch et the' rooye heing-wider than the pin 3Q, e slight londtuinel movement meybe imported/to the huelr when the rem l "impacte the ehnnlr 26, The chuck 28 is provided with two annuler grooves l epooed a s art end containing peeking rings 32, and etwcen these grooves il another annular groove 36 is proydedl The groove e6y communicates with the recess ed in ehuolr by moans of duets d5, ond the recess 34 delivers erielly into the drill here 3d of the chuck, so to oonvey'the scaven lng agent into the longitudinali here de o the drill tool ed, Wheu't oition in the ohuclt as heet indieated rig, of the drawings, The drill tool has a shoulder i5 to shut the front ci the ehuolr 2S and prevent the leakage otthe scavenging argent, The scavenging ugent employed may he either oompreeed dir, water, or steam, or Compressed' air and Weten, and steam ma be used simul.teneeuelyl The supper-t5 :s provided with hor-s v4l0 4t2," through Wliieh the scavenging agent or agente mly be admit-tml1 When 1t edosircd to use ,tossed air or weter alone, as the eoayen lng ugent, the pipe ila which conveys te agent, is tapped into one or the other of the holes in the member t (see hole del, while the other hole d2 is pluggedup as at et, but when two different scavenging agents, such es water end com ircssed oir, are to be em= pioyed, oth the oles d0 and i2 may he used, one for the air, and one for the water, the practical operetion of the inven= tiong the scavenging agent is fed into the groove 36, where it travels throu h the ducts 5 into the recess dei, and is de ivered into the bore i6 of the drill tool de, by which it is the drill to blow 'out the debris. On the forward rcoiprocation of the piston 11, the

tool to make a cutwhile on the rearward reoiprocation ofthe piston 11 a pertial turn will begiven to the shaft 1d in a eounter= clockwise direction in Fig. 4t to correspond= ingly turn the gear 19 and thereby impart a partial rotation through the gear 2i to the shaft 28 which shaft, 1n turn throu h the eers 2e and 25, imports a partial rota ion to Ae chuck 28. inasmuch as the tool bore 83 of the chuck and the tool itself, where it enters the chuck, is of anguler form, in cross section, the rotation of the chuck will eeot the rotation ci the tool,

The foregoing described matter is a dil themes visional part of my copendin op lisation, tiled Fels. 2e; 1912; Serielllo, 73, i w

The turnlnlg sheit 23 is pro eeted at the rear end of tie machine, (ses if. 1).'so it may provided with a crank, ses do lines ligfx l), in oase the bit should stick in the hole and stop therotation2 .By the eid ci the lcrenlr the rotation of the shaft i8 een he assisted to oomplste the hole. or if thev automatievlmeans for rotatin the shaft for any cause ts out of opera ive condition, the shaft 2 may be rotated by hand.

From the tore ing description, taken in oonnection with o accompanying drawing, it is thought the complete construction, n eration and advantages o f the invention w y he .epercnt to those skilled in the art to g while the invention appertlnrris` Whet I claim is: t

LA duid actuated drilling engine, ineludin a reci lroest-mag hammer piston end means or hol lng sai Ersten from rotation combined with a drill c uck and means for turning the samesaid vlastnamed meen! including a power transmitting shaft end power transmitting and transletingconneo tions between seid-piston andlseid s aft, endV power transmitting connections between nid shaft and said chuck,

.2l In a drilling apparatus, s drilling enn ine proper includin a reci rotating pilvon, and means for ho ding seV d iston from rotation, a chuck holder carried l said on- 4neg a chuck rotatably mounts in slid elder. and havin e shank to be impacted 19g by said piston a rill held in said chuck and l power transmitting and translatlngvdevioes l connecting said chuck with seid en pil-5 ton for impartin rotary movemen to nids chuck as said pis on moves in one direction, 1 said power transmitting and translating devices including apower transmitting s uit, and means co perstive with said shaft for eecting the turning operation of seid chuck without adeeting the action of seid istcn.

In a drilling apparatus, a dri lin gine proper inclu ing a reciprocating p sten, means for holding t e piston from rotating within its workin chamber, a chuck holder carried by theosai engine, s chuck rotatsblz mounted in said holder and having a than to be impacted b the said piston, s drill held in said chuo and power transmittin and translatin devices connecting ssi chuck with sai en ne piston for imparting no rotary movement the said chuck ss the iston moves in one direction, said power `rxmsmitting and translating devices including a power transmitting shaft having independent rotary movement and a crank rsoeivin extension.

et, f duid pressure actuated gine inoludin a' reeiprocetin ton combine l with a drill c uok havin n shank to be impacted by thepiston wen No III drilling enhamm'er pismoving in one'directiomand means for turni'otatable independently of the said actuating the chuck as che piston moves in a direcing means, and having a crank receiving ex- `tion reversely to the direction of impacting tension.

movement, the 4seid means including a power CLARK J. SMITH. 5 transmitting shaft including means 'for 10- .VVitnessem l taining the shaft operated by the return C. S. MILLER,

' movement of the piston, the said shaft being HARRY B." 

